Year	Percent
1996-01-01	7.1585700000000000
1997-01-01	7.1585700000000000
1998-01-01	7.1585700000000000
1999-01-01	7.6326399999999990
2000-01-01	7.6326399999999990
2001-01-01	6.3130200000000000
2002-01-01	11.6645000000000000
2003-01-01	6.4974000000000000
2004-01-01	7.6223300000000010
2005-01-01	7.3783900000000000
2006-01-01	7.3045000000000000
2007-01-01	6.9979700000000000
2008-01-01	8.3391700000000000
2009-01-01	8.8198100000000000
2010-01-01	9.5233000000000000
2011-01-01	12.0546000000000000
2012-01-01	6.5826199999999995
2013-01-01	7.3533200000000000
2014-01-01	5.7624500000000000
2015-01-01	9.7009000000000000
2016-01-01	6.1492500000000000